/usr/lib/python3/dist-packages/trytond/backend/sqlite/database.py is in tryton-server 4.6.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# this repository contains the full copyright notices and license terms.
from trytond.backend.database import DatabaseInterface, SQLType
from trytond.config import config
import os
from decimal import Decimal
import datetime
import time
import sys
import threading
import logging
_FIX_ROWCOUNT = False
try:
from pysqlite2 import dbapi2 as sqlite
from pysqlite2.dbapi2 import IntegrityError as DatabaseIntegrityError
from pysqlite2.dbapi2 import OperationalError as DatabaseOperationalError
# pysqlite2 < 2.5 doesn't return correct rowcount
_FIX_ROWCOUNT = sqlite.version_info < (2, 5, 0)
except ImportError:
import sqlite3 as sqlite
from sqlite3 import IntegrityError as DatabaseIntegrityError
from sqlite3 import OperationalError as DatabaseOperationalError
from sql import Flavor, Table, Query, Expression
from sql.functions import (Function, Extract, Position, Substring,
Overlay, CharLength, CurrentTimestamp, Trim)
__all__ = ['Database', 'DatabaseIntegrityError', 'DatabaseOperationalError']
logger = logging.getLogger(__name__)
class SQLiteExtract(Function):
__slots__ = ()
_function = 'EXTRACT'
@staticmethod
def extract(lookup_type, date):
if date is None:
return None
if len(date) == 10:
year, month, day = list(map(int, date.split('-')))
date = datetime.date(year, month, day)
else:
datepart, timepart = date.split(" ")
year, month, day = list(map(int, datepart.split("-")))
timepart_full = timepart.split(".")
hours, minutes, seconds = list(map(int, timepart_full[0].split(":")))
if len(timepart_full) == 2:
microseconds = int(timepart_full[1])
else:
microseconds = 0
date = datetime.datetime(year, month, day, hours, minutes, seconds,
microseconds)
if lookup_type.lower() == 'century':
return date.year / 100 + (date.year % 100 and 1 or 0)
elif lookup_type.lower() == 'decade':
return date.year / 10
elif lookup_type.lower() == 'dow':
return (date.weekday() + 1) % 7
elif lookup_type.lower() == 'doy':
return date.timetuple().tm_yday
elif lookup_type.lower() == 'epoch':
return int(time.mktime(date.timetuple()))
elif lookup_type.lower() == 'microseconds':
return date.microsecond
elif lookup_type.lower() == 'millennium':
return date.year / 1000 + (date.year % 1000 and 1 or 0)
elif lookup_type.lower() == 'milliseconds':
return date.microsecond / 1000
elif lookup_type.lower() == 'quarter':
return date.month / 4 + 1
elif lookup_type.lower() == 'week':
return date.isocalendar()[1]
return getattr(date, lookup_type.lower())
def date_trunc(_type, date):
if _type == 'second':
return date
try:
tm_tuple = time.strptime(date, '%Y-%m-%d %H:%M:%S')
except Exception:
return None
if _type == 'year':
return "%i-01-01 00:00:00" % tm_tuple.tm_year
elif _type == 'month':
return "%i-%02i-01 00:00:00" % (tm_tuple.tm_year, tm_tuple.tm_mon)
elif _type == 'day':
return "%i-%02i-%02i 00:00:00" % (tm_tuple.tm_year, tm_tuple.tm_mon,
tm_tuple.tm_mday)
def split_part(text, delimiter, count):
if text is None:
return None
return (text.split(delimiter) + [''] * (count - 1))[count - 1]
class SQLitePosition(Function):
__slots__ = ()
_function = 'POSITION'
@staticmethod
def position(substring, string):
if string is None:
return
try:
return string.index(substring) + 1
except ValueError:
return 0
def replace(text, pattern, replacement):
return str(text).replace(pattern, replacement)
def now():
return datetime.datetime.now().isoformat(' ')
class SQLiteSubstring(Function):
__slots__ = ()
_function = 'SUBSTR'
class SQLiteOverlay(Function):
__slots__ = ()
_function = 'OVERLAY'
@staticmethod
def overlay(string, placing_string, from_, for_=None):
if for_ is None:
for_ = len(placing_string)
return string[:from_ - 1] + placing_string + string[from_ - 1 + for_:]
class SQLiteCharLength(Function):
__slots__ = ()
_function = 'LENGTH'
class SQLiteCurrentTimestamp(Function):
__slots__ = ()
_function = 'NOW' # More precise
class SQLiteTrim(Trim):
def __str__(self):
flavor = Flavor.get()
param = flavor.param
function = {
'BOTH': 'TRIM',
'LEADING': 'LTRIM',
'TRAILING': 'RTRIM',
}[self.position]
def format(arg):
if isinstance(arg, str):
return param
else:
return str(arg)
return function + '(%s, %s)' % (
format(self.string), format(self.characters))
def sign(value):
if value > 0:
return 1
elif value < 0:
return -1
else:
return value
def greatest(*args):
args = [a for a in args if a is not None]
if args:
return max(args)
else:
return None
def least(*args):
args = [a for a in args if a is not None]
if args:
return min(args)
else:
return None
MAPPING = {
Extract: SQLiteExtract,
Position: SQLitePosition,
Substring: SQLiteSubstring,
Overlay: SQLiteOverlay,
CharLength: SQLiteCharLength,
CurrentTimestamp: SQLiteCurrentTimestamp,
Trim: SQLiteTrim,
}
class SQLiteCursor(sqlite.Cursor):
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
pass
class SQLiteConnection(sqlite.Connection):
def cursor(self):
return super(SQLiteConnection, self).cursor(SQLiteCursor)
class Database(DatabaseInterface):
_local = threading.local()
_conn = None
flavor = Flavor(
paramstyle='qmark', function_mapping=MAPPING, null_ordering=False)
IN_MAX = 200
TYPES_MAPPING = {
'DATETIME': SQLType('TIMESTAMP', 'TIMESTAMP'),
'BIGINT': SQLType('INTEGER', 'INTEGER'),
'BOOL': SQLType('BOOLEAN', 'BOOLEAN'),
}
def __new__(cls, name=':memory:'):
if (name == ':memory:'
and getattr(cls._local, 'memory_database', None)):
return cls._local.memory_database
return DatabaseInterface.__new__(cls, name=name)
def __init__(self, name=':memory:'):
super(Database, self).__init__(name=name)
if name == ':memory:':
Database._local.memory_database = self
def connect(self):
if self.name == ':memory:':
path = ':memory:'
else:
db_filename = self.name + '.sqlite'
path = os.path.join(config.get('database', 'path'), db_filename)
if not os.path.isfile(path):
raise IOError('Database "%s" doesn\'t exist!' % db_filename)
if self._conn is not None:
return self
self._conn = sqlite.connect(path,
detect_types=sqlite.PARSE_DECLTYPES | sqlite.PARSE_COLNAMES,
factory=SQLiteConnection)
self._conn.create_function('extract', 2, SQLiteExtract.extract)
self._conn.create_function('date_trunc', 2, date_trunc)
self._conn.create_function('split_part', 3, split_part)
self._conn.create_function('position', 2, SQLitePosition.position)
self._conn.create_function('overlay', 3, SQLiteOverlay.overlay)
self._conn.create_function('overlay', 4, SQLiteOverlay.overlay)
if sqlite.sqlite_version_info < (3, 3, 14):
self._conn.create_function('replace', 3, replace)
self._conn.create_function('now', 0, now)
self._conn.create_function('sign', 1, sign)
self._conn.create_function('greatest', -1, greatest)
self._conn.create_function('least', -1, least)
if (hasattr(self._conn, 'set_trace_callback')
and logger.isEnabledFor(logging.DEBUG)):
self._conn.set_trace_callback(logger.debug)
self._conn.execute('PRAGMA foreign_keys = ON')
return self
def get_connection(self, autocommit=False, readonly=False):
if self._conn is None:
self.connect()
if autocommit:
self._conn.isolation_level = None
else:
self._conn.isolation_level = 'IMMEDIATE'
return self._conn
def put_connection(self, connection=None, close=False):
pass
def close(self):
if self.name == ':memory:':
return
if self._conn is None:
return
self._conn = None
@classmethod
def create(cls, connection, database_name):
if database_name == ':memory:':
path = ':memory:'
else:
if os.sep in database_name:
return
path = os.path.join(config.get('database', 'path'),
database_name + '.sqlite')
with sqlite.connect(path) as conn:
cursor = conn.cursor()
cursor.close()
def drop(self, connection, database_name):
if database_name == ':memory:':
self._local.memory_database._conn = None
return
if os.sep in database_name:
return
os.remove(os.path.join(config.get('database', 'path'),
database_name + '.sqlite'))
def list(self):
res = []
listdir = [':memory:']
try:
listdir += os.listdir(config.get('database', 'path'))
except OSError:
pass
for db_file in listdir:
if db_file.endswith('.sqlite') or db_file == ':memory:':
if db_file == ':memory:':
db_name = ':memory:'
else:
db_name = db_file[:-7]
try:
database = Database(db_name).connect()
except Exception:
continue
if database.test():
res.append(db_name)
database.close()
return res
def init(self):
from trytond.modules import get_module_info
with self.get_connection() as conn:
cursor = conn.cursor()
sql_file = os.path.join(os.path.dirname(__file__), 'init.sql')
with open(sql_file) as fp:
for line in fp.read().split(';'):
if (len(line) > 0) and (not line.isspace()):
cursor.execute(line)
ir_module = Table('ir_module')
ir_module_dependency = Table('ir_module_dependency')
for module in ('ir', 'res'):
state = 'not activated'
if module in ('ir', 'res'):
state = 'to activate'
info = get_module_info(module)
insert = ir_module.insert(
[ir_module.create_uid, ir_module.create_date,
ir_module.name, ir_module.state],
[[0, CurrentTimestamp(), module, state]])
cursor.execute(*insert)
cursor.execute('SELECT last_insert_rowid()')
module_id, = cursor.fetchone()
for dependency in info.get('depends', []):
insert = ir_module_dependency.insert(
[ir_module_dependency.create_uid,
ir_module_dependency.create_date,
ir_module_dependency.module,
ir_module_dependency.name,
],
[[0, CurrentTimestamp(), module_id, dependency]])
cursor.execute(*insert)
conn.commit()
def test(self):
sqlite_master = Table('sqlite_master')
select = sqlite_master.select(sqlite_master.name)
select.where = sqlite_master.type == 'table'
select.where &= sqlite_master.name.in_([
'ir_model',
'ir_model_field',
'ir_ui_view',
'ir_ui_menu',
'res_user',
'res_group',
'ir_module',
'ir_module_dependency',
'ir_translation',
'ir_lang',
])
with self._conn as conn:
cursor = conn.cursor()
try:
cursor.execute(*select)
except Exception:
return False
return len(cursor.fetchall()) != 0
def lastid(self, cursor):
# This call is not thread safe
return cursor.lastrowid
def lock(self, connection, table):
pass
def has_constraint(self):
return False
def has_multirow_insert(self):
return True
def sql_type(self, type_):
if type_ in self.TYPES_MAPPING:
return self.TYPES_MAPPING[type_]
if type_.startswith('VARCHAR'):
return SQLType('VARCHAR', 'VARCHAR')
return SQLType(type_, type_)
def sql_format(self, type_, value):
if type_ in ('INTEGER', 'BIGINT'):
if (value is not None
and not isinstance(value, (Query, Expression))):
value = int(value)
return value
sqlite.register_converter('NUMERIC', lambda val: Decimal(val.decode('utf-8')))
if sys.version_info[0] == 2:
sqlite.register_adapter(Decimal, lambda val: buffer(str(val)))
sqlite.register_adapter(bytearray, lambda val: buffer(val))
else:
sqlite.register_adapter(Decimal, lambda val: str(val).encode('utf-8'))
def adapt_datetime(val):
return val.replace(tzinfo=None).isoformat(" ")
sqlite.register_adapter(datetime.datetime, adapt_datetime)
sqlite.register_adapter(datetime.time, lambda val: val.isoformat())
sqlite.register_converter('TIME', lambda val: datetime.time(*list(map(int,
val.decode('utf-8').split(':')))))
sqlite.register_adapter(datetime.timedelta, lambda val: val.total_seconds())
def convert_interval(value):
value = float(value)
# It is not allowed to instatiate timedelta with the min/max total seconds
if value >= _interval_max:
return datetime.timedelta.max
elif value <= _interval_min:
return datetime.timedelta.min
return datetime.timedelta(seconds=value)
_interval_max = datetime.timedelta.max.total_seconds()
_interval_min = datetime.timedelta.min.total_seconds()
sqlite.register_converter('INTERVAL', convert_interval)
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